High-speed rotor system of low-power-consumption magnetic suspension control moment gyroscope

Abstract

The invention discloses a high-speed rotor system of a low-power-consumption magnetic suspension control moment gyroscope. The high-speed rotor system comprises radial magnetic bearing stator assemblies, an axial magnetic bearing stator assembly, a cup type motor, a radial sensor assembly, an axial sensor assembly, a protection bearing and a gyroscope room. A mixed magnetic bearing scheme is adopted by the radial magnetic bearing stator assemblies. Each radial magnetic bearing stator assembly comprises a sleeve, a radial magnetic bearing stator, a coil, a permanent magnet, a bias magnetic ringand a guide magnetic ring. The radial magnetic bearing scheme of the structure is adopted by the rotor system, and the rotor system has the advantages that the mass is small, losses are low, the structure is simple, and the assembly process is simple and reliable.

Description

technical field [0001] The invention relates to the technical field of designing magnetic suspension bearings, and in particular relates to a low-power consumption magnetic suspension control torque gyro high-speed rotor system. Background technique [0002] Magnetic suspension bearings have the advantages of no mechanical friction, no lubrication, high rotor speed, long life, and high reliability. They are widely used in molecular pumps, blowers, flywheels, and control torque gyroscopes. Among them, the high-speed rotor system that controls the moment gyroscope is supported by magnetic suspension bearings, which can realize the characteristics of no mechanical friction and no lubrication. [0003] The CNKI document titled "Analysis and Research on Thermal-Structure Coupling of Magnetic Suspension Control Torque Gyroscope" uses active and passive magnetic bearings. The CNKI document titled "A Low Disturbance Torque Three-DOF Spherical Magnetic Bearing" introduces a three-DO...

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Problems solved by technology

[0003] The CNKI document titled "Analysis and Research on Thermal-Structure Coupling of Magnetic Suspension Control Torque Gyroscope" uses active and passive magnetic bearings.

The CNKI document titled "A Low Disturbance Torque Three-DOF Spherical Magnetic Bearing" introduces a three-DOF spherical magnetic bearing. The contact surface between the stator and the rotor is a spherical envelope. Electromagnetic bearing, large loss

[0004] The rest of the CNKI literature on the magnetic levitation control torque gyro rotor mostly adopts the symmetrical permanent magnet bias radial magnetic bearing structure, which has a large loss and is difficult to assemble.

[0005] The Chinese patent literature with the authorization number CN104118579B provides a four-degree-of-freedom single-frame magnetic levitation control moment gyroscope. The rotor part is supported by a four-degree-of-freedom magnetic bearing. Its structure is relatively complicated and assembly is difficult.

The Chinese patent literature with the authorization number CN100538270C provides a double-frame magnetic levitation control moment gyroscope. The radial magnetic bearing part adopts a symmetrical hybrid magnetic bearing. A radial magnetic bearing assembly includes two magnetic bearing stators, and the magnetic poles are aligned. The assembly process is cumbersome and the loss is relatively high

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